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LUTEAR CELLS AND HEN-FEATHERING 



Lutear cells 



Lutear cells 



Fig. 1. Two groups of lutear cells in the theca of the follicle of the hen. 



Lutear* cells 



Fig. 2. Three groups of lutear cells in the connective tissue between the seminal 

 tubules of the Sebright male. 



are responsible for hen-feathering in the female as well as in the male 

 Sebright. 



A histological examination of the testis of a Sebright has shown that 

 it contains groups of lutear cells (Fig. 2) identical in appearance with 

 those in the ovary of the hen. It seems practically certain that these 



